JPS54106161A - Switch circuit - Google Patents

Switch circuit

Info

Publication number
JPS54106161A
JPS54106161A JP1326678A JP1326678A JPS54106161A JP S54106161 A JPS54106161 A JP S54106161A JP 1326678 A JP1326678 A JP 1326678A JP 1326678 A JP1326678 A JP 1326678A JP S54106161 A JPS54106161 A JP S54106161A
Authority
JP
Japan
Prior art keywords
voltage
time constant
circuit
switching
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1326678A
Other languages
Japanese (ja)
Inventor
Harumi Horiuchi
Hideo Aoyanagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAUN DESIGN JAPAN KK
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Original Assignee
SAUN DESIGN JAPAN KK
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SAUN DESIGN JAPAN KK, Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd filed Critical SAUN DESIGN JAPAN KK
Priority to JP1326678A priority Critical patent/JPS54106161A/en
Priority to US05/933,624 priority patent/US4236088A/en
Publication of JPS54106161A publication Critical patent/JPS54106161A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/62—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors
    • H03K17/6257—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors with several inputs only combined with selecting means
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/72—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • H03F2203/7224—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal the gated amplifier being switched on or off by clamping by a switch at the output of the amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Electronic Switches (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE: To smooth the voltage change which affects the output and also to reduce the noise caused at the switching time for the circuit which switches the input signals electronically by applying the control voltage varying with a certain time constant to the switching element.
CONSTITUTION: With switch S1 turned on, voltage E1 is supplied to time constant circuit 1. And the output voltage of circuit 1 increases from O to E1 by the time constant which is determined by resistance R1 and capacitor C1, and then becomes control voltage V1 via buffer circuit 2. On the other hand, E1 is supplied to sub- traction circuit 3 to obtain output voltage V1' = E1 - V1. In other words, output voltage V2' reduces from E1 to O by the time constant of C1 x R1. Then V2' becomes control voltage V2 via buffer 4. This is simplified as V1, = V1 and V2, = V2. When switch S1 is opened, diode D1 conducts. And voltage V1 reduces from E1 to O with the time constant determined by C1 and resistance R2; while voltage V2 increases to E1 from O with the same time constant. With application of V1 and V2 to switching element Q1 and Q2, the switching is possible between amplifier 5 and 6.
COPYRIGHT: (C)1979,JPO&Japio
JP1326678A 1978-02-08 1978-02-08 Switch circuit Pending JPS54106161A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1326678A JPS54106161A (en) 1978-02-08 1978-02-08 Switch circuit
US05/933,624 US4236088A (en) 1978-02-08 1978-08-14 Noise-free switching circuit for and method of electronically selecting audio input signals in audio systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1326678A JPS54106161A (en) 1978-02-08 1978-02-08 Switch circuit

Publications (1)

Publication Number Publication Date
JPS54106161A true JPS54106161A (en) 1979-08-20

Family

ID=11828406

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1326678A Pending JPS54106161A (en) 1978-02-08 1978-02-08 Switch circuit

Country Status (2)

Country Link
US (1) US4236088A (en)
JP (1) JPS54106161A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57212826A (en) * 1981-06-24 1982-12-27 Matsushita Electric Ind Co Ltd Signal switching circuit
JPS5875908A (en) * 1981-10-30 1983-05-07 Matsushita Electric Ind Co Ltd Switching device
JPS5925422A (en) * 1982-06-16 1984-02-09 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Circuit disposition with plural signal lines made of active circuit
JPH01318428A (en) * 1988-06-20 1989-12-22 Fujitsu General Ltd Signal switching device
JPH03117939U (en) * 1990-03-16 1991-12-05
JPH05129915A (en) * 1991-07-02 1993-05-25 Samsung Electron Co Ltd Crosstalk preventive multi-input single output analog switch circuit

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5947841A (en) * 1982-09-09 1984-03-17 Mitsubishi Electric Corp Analog switch
US4574221A (en) * 1984-01-04 1986-03-04 Motorola, Inc. Ignition control integrated circuit having substrate injection preventing means
US4972157A (en) * 1989-07-21 1990-11-20 Advanced Micro Devices, Inc. Operational amplifier having selectable inputs
DE3929890A1 (en) * 1989-09-08 1991-03-14 Telefunken Electronic Gmbh CIRCUIT FOR SIGNAL PROCESSING OF SYMMETRICAL SIGNALS
US6218887B1 (en) * 1996-09-13 2001-04-17 Lockheed Martin Corporation Method of and apparatus for multiplexing multiple input signals
US5926068A (en) * 1997-10-16 1999-07-20 Kabushiki Kaisha Toshiba Variable gain amplifier or analog multiplexer with feedforward current blocking
EP0913926B1 (en) 1997-10-31 2004-03-03 STMicroelectronics S.r.l. Integrated power amplifier which allows parallel connections
WO2004010576A1 (en) * 2002-07-24 2004-01-29 Sirific Wireless Corporation Multi-standard amplifier
GB2395849B (en) * 2002-11-26 2005-11-09 Wolfson Ltd Improved analogue selector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50126363A (en) * 1974-03-25 1975-10-04

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970227A (en) * 1957-04-30 1961-01-31 Lear Inc Voltage transfer switch
US3196201A (en) * 1961-04-26 1965-07-20 Conn Ltd C G Transistor keyer
US3207952A (en) * 1961-12-19 1965-09-21 Charles B Brahm Cable fade-in circuit
US3472957A (en) * 1965-01-26 1969-10-14 Northern Electric Co Fader amplifier circuits
US3550016A (en) * 1968-11-13 1970-12-22 United Aircraft Corp Multiplexing switch
GB1420936A (en) * 1972-03-29 1976-01-14 Pye Ltd Gain control arrangements
JPS5337558Y2 (en) * 1973-08-27 1978-09-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50126363A (en) * 1974-03-25 1975-10-04

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57212826A (en) * 1981-06-24 1982-12-27 Matsushita Electric Ind Co Ltd Signal switching circuit
JPS5875908A (en) * 1981-10-30 1983-05-07 Matsushita Electric Ind Co Ltd Switching device
JPS639765B2 (en) * 1981-10-30 1988-03-02 Matsushita Electric Ind Co Ltd
JPS5925422A (en) * 1982-06-16 1984-02-09 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Circuit disposition with plural signal lines made of active circuit
JPH043687B2 (en) * 1982-06-16 1992-01-24
JPH01318428A (en) * 1988-06-20 1989-12-22 Fujitsu General Ltd Signal switching device
JPH03117939U (en) * 1990-03-16 1991-12-05
JPH05129915A (en) * 1991-07-02 1993-05-25 Samsung Electron Co Ltd Crosstalk preventive multi-input single output analog switch circuit
JP2675484B2 (en) * 1991-07-02 1997-11-12 三星電子株式会社 Crosstalk prevention multi-input single-output analog switch circuit

Also Published As

Publication number Publication date
US4236088A (en) 1980-11-25

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